porsche Workshop Repair Guides

Porsche Workshop Service and Repair Manuals

Drum Brake System > < Brakes - Pedal Pulsation/Vibration
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Brake Rotor/Disc: Specifications

Brake Rotor Specifications

Front 

Diameter:

911 Carrera ..................................................................................................................................................................................................  282.5 mm
911 Turbo .......................................................................................................................................................................................................  304 mm

Minimum thickness

New:

911 Carrera .................................................................................................................................................................................................. 24 mm
911 Turbo .................................................................................................................................................................................................... 32 mm

Wear limit:

911 Carrera .................................................................................................................................................................................................. 22 mm
911 Turbo .................................................................................................................................................................................................... 30 mm

Thickness variation: ........................................................................................................................................................................................  0.02mm

Maximum lateral runout:

Brake disc ....................................................................................................................................................................................................... 0.05 mm
Brake disc - when installed ............................................................................................................................................................................... 0.1 mm

Rear

Diameter:

911 Carrera .....................................................................................................................................................................................................  290 mm
911 Turbo .......................................................................................................................................................................................................  309 mm

Minimum thickness

New:

911 Carrera .................................................................................................................................................................................................. 24 mm
911 Turbo .................................................................................................................................................................................................... 28 mm

Wear limit:

911 Carrera .................................................................................................................................................................................................. 22 mm
911 Turbo .................................................................................................................................................................................................... 26 mm

Thickness variation: ........................................................................................................................................................................................  0.02mm

Maximum lateral runout:

Brake disc ....................................................................................................................................................................................................... 0.05 mm
Brake disc - when installed ............................................................................................................................................................................... 0.1 mm

Drum Brake System > < Brakes - Pedal Pulsation/Vibration